Type-writing machine.



PATEN TED DEC. 22, 1903.

' 0. F. HOPKINS.

TYPE WRITING MACHINE.

APPLICATION FILED MAY 15, 1902.

N0 MODEL.

Tu: Noaius PETERS ch. Pnoroumq, WASHINGTON L)v c.

UNITED STATES Patented December 22, 1903.

PATENT OFFICE.

CLARENCE F. HOPKINS, OF NEW YORK ,'N. Y., ASSIGNOR, BY MESNEASSIGNMENTS, T0 ELLIOTT-FISHER COMPANY, A CORPORATION OF DELAWARE.

v TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 747,712, dated December22, 1903.

Application filed May I5, 1902.

To all whom it may concern:

Be it known that I, CLARENCE F. HOPKINS, of New York city, county of NewYork, and State of New York, have invented a new and useful Improvementin Type -Writ ing Machines, of which the following'is a specification.

My invention relates to that class of typewriting machines wherein aflat platen is employed to sustain the paper beneath the writingmechanism movable horizontally thereover for the purposes of letter andline spacing, as inthe Elliott & Hatch machine of commerce representedas to its general organization in Letters Patent to Hatch and HillardNo. 620,125. In this class of machines the writing mechanism issustained by an open rectangular frame overlying the platen and orprinting as the latter progresses.

adapted to be raised momentarily thereover, so that the edges of thepaper will be clamped between theplaten and the side bars of the frame.In practice it is found desirable to provide additional means forconfining or holding down the paper, particularly when a number ofcopies are to be produced by the employment of a number of paper sheetsand intermediate carbon-sheets.

My invention relates to a spring-actuated pressure device or clamp lyingtransversely of the platen and movable along the same from one endtoward the other in order that the pressure may be applied at difierentpoints and in the immediate vicinity of the writing In its preferredform this pressure device is attachedv to the movable frame, whichcarries the writing mechanism, so that as the latter is advanced line byline the pressure device will be moved to correspond.

Referring to the drawings, Figure l is a top plan view of the frameworkof the machine provided with my improvement, the writing mechanism beingomitted to expose the parts thereunder. Fig. 2is a vertical section onthe line 2 2 of the preceding figure with the writing mechanismindicated in dottedlines.

Referring to the accompanying drawings, A represents the fiat bed orplaten on which Serial No.107a05. (Nb model.)

chine E, which is mounted thereon, to travellaterally for letter andword spacing. The details of thewriting mechanism and the de vices forfeeding the same on the frame D forletter and Word spacing and formoving the. frame D for-line-spacing nary construction. I

F represents my pressure device, consisting' in the present instance ofa transverse bar lying within the frame D in position to bear upon theplaten or the paper thereon. This bar has its ends bent at right anglesand may all be of ordi-' mounted on a pivot-rod G, sustained in platesor ears H, secured to the frame D, this arrangement permitting the bar Fto rise and fall, allowing it to travel endwise of the platen with theframe D and the writing mechanism, so that it will at all times bearupon the paper near the line on which the;

printing is being effected. In order that the pressure device F may actthe more efiectively and with the pressure requisite to hold down anumber of sheets in compact form, a spring I, encircling the pivotrod G,is ar-. ranged to bear at one end on the frame D and at the opposite endon the pressure device, so that it exerts a sufficient pressure to keepthe loose or fluffy masses of paper down in compact form, that theprinting and manifolding operations may take place in a satisfactorymanner.

What I claim as my invention is 1. In a. type-writer, a flat platen tosustain the paper and an overlying writing mechanism, in combinationwith a spring-actuated pressure device to act upon the paper, movablelengthwise of the platen.

2. In atype-writing machine, the combination of the platen, an overlyingtraveling frame D with the writing mechanism sustained thereon, and aspring-actuated pressure device attached to said frame and arranged tobear upon the paper beneath.

3. In a type-writing machine, the combination of the following elements:a Hat platen, a type-writing mechanism movable thereover, means forconfining the paper removably on the platen, and a transverse yieldingpressure device, adjustable lengthwise of the platen, to aid inconfining the paper thereon.

4. In a type-Writing machine, the combination of the following elements:a flat platen, a type-writing mechanism movable thereover, means forconfining the paper immoxL-l ably on the platen, and a transverseyielding CLARENCE F. HOPKINS.

Witnesses:

WM. A. MURRAY,

0. J. S. ANDERSON.

